lindenladouceur
Active member
Hello all,
Car is a 2011 Jetta TDI 6MT, Malone Stage 2 tune, Buzzken exhaust.
Car has been tuned for about 10,000km now. Three weeks ago car started knocking when driven cold, I was thinking this was an injector on it's way out, then the car started hesitating under acceleration, this was intermittent.
Usually if I warm the car up for 2-3 minutes, there will be no knocking, but still intermittent hesitating when accelerating while the car is warming up. But the car is gutless, I'll look down at my boost gauge pulling a slight hill and it's at 20+ psi and the car is not accelerating much at all. Other noticeable things are significantly lower EGTs, the car is also way quieter under the same load/boost/rpm etc, it used to rattle my brains and now it is not loud at all. What is going on? No codes whatsoever, I'll get to injectors in the next paragraph.
Injector Deviations when cold:
1: -0.24
2: -0.05
3: 0.0
4: 0.26
Injector Deviations when at operating temp:
1: 0.42
2: 0.0
3: -0.28
4: -0.21
So the injectors seem to be healthy, I checked idling fuel pressures and they seem to be in spec.
While the car was being warmed up (60 degree celsius coolant) and driven gently, these were the greatest deviations I saw on my log:
1: 0.14
2: 2.34
3: -1.53
4: -0.99
Are these deviations okay?^
I put a new fuel and air filter on 2500 kms ago, no signs of HPFP failure in the fuel filter canister. Any ideas as to what's going on? What sensors should I look at/clean/replace? I wish it would throw a code.
Thank you for any input, I have VCDS so if there are any more tests I can do please enlighten me and I will post results.
Have a great day!
Car is a 2011 Jetta TDI 6MT, Malone Stage 2 tune, Buzzken exhaust.
Car has been tuned for about 10,000km now. Three weeks ago car started knocking when driven cold, I was thinking this was an injector on it's way out, then the car started hesitating under acceleration, this was intermittent.
Usually if I warm the car up for 2-3 minutes, there will be no knocking, but still intermittent hesitating when accelerating while the car is warming up. But the car is gutless, I'll look down at my boost gauge pulling a slight hill and it's at 20+ psi and the car is not accelerating much at all. Other noticeable things are significantly lower EGTs, the car is also way quieter under the same load/boost/rpm etc, it used to rattle my brains and now it is not loud at all. What is going on? No codes whatsoever, I'll get to injectors in the next paragraph.
Injector Deviations when cold:
1: -0.24
2: -0.05
3: 0.0
4: 0.26
Injector Deviations when at operating temp:
1: 0.42
2: 0.0
3: -0.28
4: -0.21
So the injectors seem to be healthy, I checked idling fuel pressures and they seem to be in spec.
While the car was being warmed up (60 degree celsius coolant) and driven gently, these were the greatest deviations I saw on my log:
1: 0.14
2: 2.34
3: -1.53
4: -0.99
Are these deviations okay?^
I put a new fuel and air filter on 2500 kms ago, no signs of HPFP failure in the fuel filter canister. Any ideas as to what's going on? What sensors should I look at/clean/replace? I wish it would throw a code.
Thank you for any input, I have VCDS so if there are any more tests I can do please enlighten me and I will post results.
Have a great day!
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